Developer Playdead came up with a whole new idea: to tell a story without words. It was a milestone for the indie games. It had a pretty minimalist graphics (only silhouettes). It starts with pretty easy platforming, but later on you will face hard puzzles, that you need to solve. In this game everything has a purpose. But I have to warn everyone: it is a horror game (officially).

Official site: https://playdead.com/games/limbo/